Reject Registrations Submitted Too Fast
Stamps the WordPress registration form with a signed time and refuses sign-ups sent within a few seconds of loading it, which stops most registration bots.
Snippet Library
Security snippets for WordPress
Snippets that harden WordPress: turn off XML-RPC, hide the version number, stop user enumeration, add security headers and block risky uploads. Small, reviewable changes for site owners who want fewer attack points without a heavy security plugin.